//推荐图片动画
var imgs = $("#content-center").find("img");
for(var i = 0;i<imgs.length;i++){
	imgs[i].onmouseover = function (){
		$(this).animate({top:"-4px"});
	}
	imgs[i].onmouseout = function (){
		$(this).animate({top:"0px"});
	}
}